The alkali metals are low melting. which of the following alkali metals is expected to melt if the room temperature rises to $30^{0}$ C?

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Solution

The correct option is D Cs
Atomic size increases down the group from Na to Cs so, the strength of metallic bonding decreases and hence, the melting point also decreases.

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The alkali metals are low melting. which of the following alkali metals is expected to melt if the room temperature rises to 300C?

The correct option is D CsAtomic size increases down the group from Na to Cs so, the strength of metallic bonding decreases and hence, the melting point also decreases.

The alkali metals are low melting. which of the following alkali metals is expected to melt if the room temperature rises to $30^{0}$ C?

The correct option is D Cs
Atomic size increases down the group from Na to Cs so, the strength of metallic bonding decreases and hence, the melting point also decreases.